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%I M5065 N2193 #19 Feb 01 2022 01:31:35
%S 18,2862,158942078604,1154756479802000759397882239648671476,
%T 22705636064052332865341424631734575964031184548599980511689123743695605536329597356626173372044993289352573124700
%N Number of equivalence classes of 3-valued Post functions of n variables under action of semi-direct product of symmetric group S_n and complementing group D(n,3).
%D M. A. Harrison and R. G. High, On the cycle index of a product of permutation groups, J. Combin. Theory, 4 (1968), 277-299.
%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%K nonn
%O 1,1
%A _N. J. A. Sloane_
%E Definition improved and more terms from _Sean A. Irvine_, Oct 01 2015
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